Dental suction-plate.



G. R. POWERS.

DENTAL SUCTION PLATE.

APPLICATION IILED.JUNE 3,1908.

Patented Feb. 9, 1909.

CHARLES R. POWERS, OF PRINCETON, WISCONSIN.

DENTAL SUCTION-PLATE.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application filed June 3, 1908. Serial No. 436A85.

To all whom it may concern.

Be it known that I, CHARLES R. Pownns, a citizen of the United States,residing at Princeton, in the county of Green Lake and State ofWisconsin, have invented certain new and useful Improvements in DentalSuction-Plates, of which the following is a specification.

My invention relates to an improvement in dental suction plates, and theobject is to provide means for allowing the escape of air from under thebridge and thereby create a vacuum which can be used on all kinds ofplates.

The invention consists of certain novel features of construction andcombinations of parts which will be hereinafter described and pointedout in the claims.

In the accompanying drawings Figure 1 is a view of an upper plate; Fig.2 is a rear view thereof; Fig. 3 is a sectional view, and Figs. 4, 5,and 6 are modifications.

A, represents the plate, which is made of the usual material, and 1 isone face of the plate having a recess 2 formed therein, which isprovided with an opening 3 therethrough extending to the rear side ofthe plate and leading from the bridge 1 of the plate are channels orgrooves 5, 5 to the opening 3. A metal cup 6 is inserted in the recess,and the upper edges of the cup are bent over upon the plate for holdingthe cup therein and forming a smooth surface. The edges are so bent orformed that an annular channel is formed between the base of the cup andthe top of the cup and received therein, and in the annular channel awasher 7 is loosely held. An opening 8 is formed in the bottom of thecup, which is in alinement with the opening 3 which extends through therecess 2.

By the grooves or channels 5 which lead to the opening 3 from the bridge4 the air is drawn through the cup by the suction of the tongue andmouth, and the valve or washer 7 in the cup 6 is automatically openedand closed, creating a vacuum when the air is drawn out through the cup.

In the form shown in Fig.

4: the plate is provided with an opening 10 which extends through oneside up into the bridge 11. Grooves or channels 12 are formed in thebridge leading to the openings, and in these openings the cup 6 isinserted, together with the valve 7 and the vacuum is created by thesame principles for holding the plate as above described.

In Fig. 5 the device is shown as applied to a partial plate, and at theforward end of the plate and in Fig. 6 a valve is applied in the samemanner as in the form shown in Fig. 4;.

From the foregoing it will be seen that I have provided a valve forcreating a vacuum whereby different forms of plates can be held in themouth, and thereby do away with the artificial dentures.

It is evident that slight changes might be made in. the form andarrangement of the several parts described without departing from thespirit and scope of my invention, and hence I do not wish to be limitedto the exact construction herein set forth, but:

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is 1. A dental plate having a cup received in arecess in the plate, said cup having an opening therein extendingthrough the plate and grooves leading to the opening, a valve receivedin the cup, and an annular channel formed in the cup for holding thevalve therein.

2. A dental plate having a cup received in a recess in the plate, saidcup having an opening therein extending through the plate and groovesthrough to the opening, edges of the cup bent to form an annularchannel, and the extreme edges of the cup bent upon the plate, and avalve received in the cup and held in the annular channel.

In testimony whereof I afiix my signature in presence of two witnesses.

CHARLES R. POWERS.

Witnesses:

PHILIP LEHNER, H. J. MAXWELL.

